JP4180965B2 - Drainage structure with high water shielding performance - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drainage structure having high water shielding performance, and in particular, by using it in a waste disposal site or the like, it is possible to secure water-stopping at an external communication portion of leachate and prevent leaching water from staying. The present invention relates to a drainage structure having high water shielding performance.
[0002]
[Prior art]
The final disposal site for general waste and industrial waste will be a managed final disposal site with structural standards regulated by the government.
In the regulations, for example, in many cases, the impervious water and leachate collection and drainage equipment, so that the retained water generated in the waste due to rain and the like does not contaminate the soil and groundwater as leachate, A leachate treatment facility must be installed.
Although the structure of the impervious work differs depending on the hydraulic conductivity of the foundation ground, the retained water that accumulates at the bottom due to the effect of the impervious work is collected by a drainage pipe consisting of perforated pipes and leachate treatment as leachate. It is guided to the facility and discharged after being treated with clean water.
[0003]
The drainage pipe penetrates the waste storage levee and communicates with the drainage groove on the opposite side. However, in the part where the drainage pipe penetrates the storage levee, a structure as shown in FIGS. Has been taken.
In this drainage structure, the drainage pipe 3 penetrates the water shielding sheet 2 arranged along the inner side surface of the storage levee 1. In order to prevent leakage of leachate at this penetration position, conventionally, the drainage structure 3 The water sheet 2 is fixed to the wall surface of the storage dam 1 by a frame-shaped anchor plate 11 around the through hole 5.
[0004]
[Problems to be solved by the invention]
However, in this drainage structure, because of the work of fixing the water shielding sheet, the penetration position of the drainage pipe cannot be located at the lowest part of the storage levee, and the leachate stays and the bottom side Since the sheet is folded back and fixed to the wall surface, there is a problem that the joining structure becomes complicated and leachate leaks.
[0005]
In view of the problem of the drainage structure of the above-mentioned conventional waste disposal site, the present invention ensures high water-blocking performance that can secure the water stoppage of the external communication part of the leachate and prevent the leachate from staying. It aims at providing the drainage structure which has.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a drainage structure having high water shielding performance according to the present invention is provided with a water shielding sheet and a drainage pipe on the water shielding sheet in a storage portion formed inside a storage levee. In the drainage structure in which the leachate collected by the drainage pipe is discharged to the outside through a through hole that penetrates the reservoir and communicates the inside and outside of the reservoir, the storage formed inside the reservoir The bottom part of the part and the bottom part of the through hole are provided at substantially the same height, and the cylindrical part that is inserted into the through hole and the front wall that is integrally extended from the periphery of the cylindrical part and attached to the inner surface of the storage bank And a bottom wall that extends integrally from the lower end of the front wall and is laid on the bottom of the storage portion that is formed inside the storage levee. that joining the walls and said water shield sheets were provided with a distal end portion of the collecting drain pipe as butted a cylindrical portion of the water-impervious member And butterflies.
[0007]
This drainage structure having a high water-impervious performance is constructed by arranging a water- impervious sheet and a drainage pipe on the water- impervious sheet in the reservoir formed inside the storage levee, and collecting water by the drainage pipe . leachate, in drainage structure for discharging inside and outside of the reservoir bank through the stored bank to the outside via the through-hole communicating a bottom portion of the bottom portion and the through hole of the reservoir formed inside the reservoir Tsutsumi Provided at substantially the same height, a cylindrical portion that is inserted into the through hole, a front wall that is integrally extended from the periphery of the cylindrical portion and attached to the inner surface of the storage dam, and integrated from the lower end of the front wall A water shielding member provided with a bottom wall laid on the bottom of the storage portion that is formed on the inner side of the storage levee, and joins the water shielding sheet to the bottom wall and the front wall of the water shielding member and, since disposing the distal end portion of the current drainage pipes as butted a cylindrical portion of the water-impervious member, planar joining of water shield sheet Performed, while securing the water stopping of the external communication part of the leachate can be disposed at the bottom of the reservoir which is formed a collecting drainage pipes inside the reservoir dam, to prevent the accumulation of leachate.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of a drainage structure having high water shielding performance of the present invention will be described with reference to the drawings.
[0009]
1 to 2 show an embodiment in which the drainage structure having high water shielding performance of the present invention is applied to the drainage structure of a waste disposal site.
This waste disposal site has a drainage structure in which a water shielding sheet 2 and a drainage pipe 3 are disposed in a storage portion formed inside the storage dam 1, and leachate collected by the drainage pipe 3 is adapted to discharge the drainage grooves 4 through the through-hole 5 communicating the inside and the outside of the reservoir bank 1 through a reservoir bank 1.
And the drainage structure of this waste disposal site provides the bottom part of the storage part formed inside the storage levee 1 and the bottom part of the through-hole 5 at substantially the same height, and penetrates without connecting to the drainage pipe 3. A cylindrical portion 61 that is inserted into the hole 5, a front wall 62 that is integrally extended from the periphery of the cylindrical portion 61 and attached to the inner surface of the storage dam 1, and that is integrally extended from the lower end of the front wall 62. A water shielding member 6 including a bottom wall 63 laid on the bottom of the storage portion formed inside the storage levee 1, the bottom wall 63 and the front wall 62 of the water shielding member 6, and the water shielding sheet. 2 is joined.
[0010]
The storage bank 1 is made of concrete or the like, and a storage part for storing waste (not shown) is formed inside thereof, and a drainage groove 4 to which a water shielding sheet 2 is attached is installed outside thereof. Yes.
In addition, a ring-shaped seal packing 8 is disposed in the through-hole 5 of the storage bank, and the bottom of the storage part formed inside the storage bank 1 is wider than the bottom wall 63 of the water shielding member 6. Concrete 9 is laid.
[0011]
The water-impervious sheet 2 is made of a synthetic resin or synthetic rubber sheet, and is laid on the entire storage portion including the inner surface of the storage levee 1.
A drainage pipe 3 is installed on the water-impervious sheet 2, and as shown in FIG. 1 (b), there is a permeation bolus 10 around the drainage pipe 3 made of a perforated pipe. It is laid down.
The drainage pipe 3 is disposed so that the tip end thereof is in contact with the cylindrical part 61 of the water-impervious member 6, and, as shown in FIG. 2, between the drainage pipe 3 and the cylindrical part 61. A filter screen 7 is interposed.
[0012]
As the water-impervious member 6, it is possible to use a member integrally formed of a synthetic resin such as a vinyl chloride resin having no water permeability and a weather resistance and a certain degree of rigidity, or a polyolefin resin such as polyethylene or polypropylene.
And in construction, the bottom wall 63 and the front wall 62 of the water-impervious member 6 and the water-impervious sheet 2 are joined to each other in a watertight state by an appropriate method such as heat fusion.
The bottom wall 63 of the water-impervious member 6 is formed to have a width and length having at least a joining margin, and the front wall 62 is also formed to have a width and height having at least a joining margin.
[0013]
Thus, the drainage structure of the waste disposal site of the present embodiment is provided with the bottom of the storage portion formed inside the storage bank 1 and the bottom of the through hole 5 at substantially the same height and is connected to the drainage pipe 3. A cylindrical portion 61 that is inserted into the through-hole 5 without being inserted, a front wall 62 that is integrally extended from the periphery of the cylindrical portion 61 and attached to the inner surface of the storage dam 1, and is integrated from the lower end of the front wall 62. A water shielding member 6 provided with a bottom wall 63 laid on the bottom of the storage portion formed inside the storage dam 1, the bottom wall 63 and the front wall 62 of the water shielding member 6, and the aforementioned Since the impervious sheet 2 is joined, the impervious sheet 2 is joined in a flat manner to ensure the water stoppage of the external communication part of the leachate, and the drainage pipe 3 is arranged at the lowermost part of the storage dam 1. It is possible to prevent retention of leachate.
[0014]
As mentioned above, although the Example of the drainage structure which has the high water-impervious performance of this invention was described, the drainage structure which has the high water-impervious performance of this invention is not limited to description of this Example, The meaning is Changes can be made as appropriate without departing from the scope.
[0015]
【The invention's effect】
According to the drainage structure having high water shielding performance of the present invention, a water shielding sheet and a drainage pipe on the water shielding sheet are disposed in a storage portion formed inside the storage bank, In the drainage structure that drains the leachate collected at the outlet and discharges it to the outside through a through hole that connects the inside and outside of the storage levee through the storage levee, and penetrates the bottom of the storage part formed inside the storage levee A bottom portion of the hole is provided at substantially the same height , a cylindrical portion that is fitted into the through hole, a front wall that is integrally extended from the periphery of the cylindrical portion and attached to the inner surface of the storage levee, and the front wall A water shielding member provided with a bottom wall that extends integrally from the lower end of the storage wall and is laid on the bottom of the storage portion that is formed inside the storage levee, the bottom wall and the front wall of the water shielding member, and the water shielding since joining the sheets, arranging a leading end portion of the current drainage pipes as butted a cylindrical portion of the water-impervious member, contact the water shield sheet In order to ensure the water stoppage of the external communication part of the leachate, and to prevent the leachate from staying by installing a drainage pipe at the bottom of the reservoir formed inside the reservoir bank be able to.
[Brief description of the drawings]
FIG. 1 shows an embodiment of a drainage structure having high water shielding performance according to the present invention, in which (a) is a cross-sectional view thereof, and (b) is a cross-sectional view in the vicinity of a drainage pipe.
FIG. 2 shows a drainage structure having the same high water shielding performance, wherein (a) is a longitudinal sectional view of an essential part, (b) is a transverse sectional view, (c) is a front view of a water shielding member, and (d). Is a rear view of the same.
3A and 3B show a drainage structure of a conventional waste disposal site, where FIG. 3A is a cross-sectional view of a structural waste disposal site, and FIG. 3B is a cross-sectional view of an embankment type waste disposal site.
4A and 4B show the drainage structure of the waste disposal site, where FIG. 4A is an enlarged view of the main part of FIG. 3A and FIG. 4B is an enlarged view of the main part of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Reservoir 2 Water-impervious sheet 3 Drainage / drainage pipe 4 Drainage groove 5 Through-hole 6 Water-impervious member 61 Cylindrical part 62 Front wall 63 Bottom wall 7 Filter screen 8 Seal packing 9 Concrete 10 Quarry stone

Claims (1)

A water-impervious sheet and a drainage pipe on the water- impervious sheet are disposed in a reservoir formed inside the reservoir, and leachate collected by the drainage pipe is stored through the reservoir. in drainage structure for discharging to the outside through the through-hole communicating inside and outside of the bank, provided with a bottom portion of the bottom portion and the through hole of the reservoir formed inside the reservoir dam at substantially the same height, the through hole A tubular portion to be inserted, a front wall extending integrally from the periphery of the tubular portion and attached to the inner surface of the storage levee, and integrally extending from the lower end of the front wall and formed inside the storage levee A water shielding member having a bottom wall laid on the bottom of the storage portion, joining the bottom and front walls of the water shielding member and the water shielding sheet, and shielding the tip of the drainage pipe. A drainage structure having high water shielding performance, wherein the drainage structure is disposed so as to face a cylindrical portion of a water member .

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